Which of the following situations would not support the auditor's decision to reduce control risk below maximum for the audit of intangible assets?

a. The client employs a qualified specialist who reviews the value of the intangible assets on an annual basis for impairment.

b. The auditor documented, tested, and developed an understanding of the acquisition process and found the key controls to be effective.

c. The IT system that maintains the records for intangible assets has adequate controls to prevent unauthorized access.

d. The company has made no acquisitions of other companies during the fiscal year under audit.